please help! i just need the equations for the charts! grade 7 i give branliest

Answer:
Chart 1: y = 8x
Chart 2: y = 0.13x
Step-by-step explanation:
to find slope, use y2 - y1 / x2 - x1
Chart 1:
y2 - y1 / x2 - x1
18 - 10 / 2 - 1
8 / 1 or just 8
y = 8x
Chart 2:
y2 - y1 / x2 - x1
4 - 2 / 30 - 15
2 / 15
≈ 0.13
y = 0.13x
Edit: this is wrong. I did not look at all the Y values. Apologies